Post on 29-Mar-2015
Career & Technical
EducationSketching
2.00
Explain and demonstrate basic sketching skills and techniques.
Career & Technical
EducationSketching Concepts
2.01
Explain the concepts related to sketching.
Purpose of a Sketch
Quickly & easily get an idea on paper Design sketches Freehand technical sketches Technical illustrations
Design Sketch
Technical Illustration
Sketching Materials
Paper Pencil
Soft lead
Optional Eraser Grid Paper
Sketching Technique
Proportion
Clarity
Sketching Aids
Sketching Lines
Vertical lines Top to bottom
Long straight lines Series of short straight lines
Sketching Circles & Arcs
Begin by lightly constructing a square
Sketching Angles
Begin with 90° angle60°
30°
45°
Subdivide once Subdivide twice
Sketching Assignment
Career & Technical
EducationSketching
2.02
Explain the concepts and principles underlying isometric, oblique and multiview sketching.
Sketching
Types of Sketches
Single-view
Multi-view
Pictorials
Single-view Sketching
Technical purposes
Front view Most descriptive features
Steps for Single-view Sketching
Object
Step 2Step 1
Step 3 Step 4
Multi-view Sketching
Technical sketch Front view
Top view
Side view
Multi-view Sketch
TOP VIEW
R. SIDE VIEWFRONT VIEW
Single-view/Multiview Sketch Assignment
Pictorial Sketches
Quickly communicate an idea
Three dimensions in one view Width
Height
Depth
Pictorial Sketches
Three (3) types Isometric
Oblique
Perspective
Isometric Sketch
WIDTH
DEPTH
HE
IGH
T
Isometric Sketching
Three equally spaced axes of 120°
Isometric Sketching
Receding lines Typically 30°
off horizontal
Isometric Sketching
Circular shapes appear as ellipses
Isometric Ellipses
Correct ellipse orientation
Isometric Sketching
Non-Isometric lines Locate
endpoints and connect
Isometric Sketching Assignment
Oblique Sketch
WIDTH
DEPTH
HE
IGH
T
Oblique Sketching
Front view is drawn true shape and size
Oblique Sketching
Receding edges are usually drawn at an angle of 30°, 45°, or 60°
Oblique Sketching
Circles and curves drawn on frontal plane will appear true shape and size
Oblique Sketching Assignment
Perspective Sketches
2-Point Perspective1-Point Perspective
Perspective Sketches
Objects appear as the eye would see them
Most realistic type of pictorial sketch
Most difficult pictorial sketch to draw
Perspective Sketching Assignment